<template>
  <div class="App">
    <!-- head -->
    <HmHeader></HmHeader>
    <HmMain></HmMain>
    <HmFooter></HmFooter>
  </div>
</template>

<script>
import HmHeader from './components/HmHeader.vue'
import HmMain from './components/HmMain.vue'
import HmFooter from './components/HmFooter.vue'
export default {
components:{
  HmHeader,
  HmMain, 
  HmFooter
}
}
</script>

<style>
.App {
  width: 600px;
  height: 700px;
  background-color: #87ceeb;
  margin: 0 auto;
  padding: 20px;
}
</style>
http://localhost:8080/